tcp: Explicitly convert a pointer to a boolean integer

This fixes warnings about making integers from pointers without
a cast, and avoids the theoretical case where the lower 32 bits of
the pointer would all be zero where the implicit cast wouldn't give
the right result.

Signed-off-by: Martin Storsjö <martin@martin.st>
movenc: Add a warning message if conflicting options have been specified

Signed-off-by: Martin Storsjö <martin@martin.st>
movenc: Simplify setting the fragmentation flag

This makes sure the faststart vs fragmentation check works as
intended when fragmentation is enabled due to using the ismv mode.

Signed-off-by: Martin Storsjö <martin@martin.st>
Merge commit 'a6a4596e12192375e1d9dffeae24d6d4c41b25c1'

* commit 'a6a4596e12192375e1d9dffeae24d6d4c41b25c1':
  tcp: Explicitly convert a pointer to a boolean integer

Conflicts:
	libavformat/tcp.c

See: 22fbc7f8becdee1fd6ab7cac93ae23d6022e9a56
Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '8b524ab0c43c1767919530abb79d3656113cdc47'

* commit '8b524ab0c43c1767919530abb79d3656113cdc47':
  movenc: Add a warning message if conflicting options have been specified

Conflicts:
	libavformat/movenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  movenc: Simplify setting the fragmentation flag

Conflicts:
	libavformat/movenc.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
avformat/riff: add 0x594a TwoCC

sample:

http://samples.mplayerhq.hu/game-formats/wc4-xan/crusader-no-regret.avi

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>